Detergents used for cleaning clothes and utensils contain
1 Nitrates
2 Bicarbonates
3 Sulphonates
4 Bismutnates
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Who suggested that most of the mass of the atom is located in the nucleus? 1 Thompson 2 Bohr 3 Rutherford 4 None of these
Which one of the following is the petroleum wax? 1 Bees wax 2 Carnauba wax 3 Paraffin wax 4 Jojoba wax
The first synthetic fiber made by man was 1 Rayon 2 Nylon 3 Polyester 4 Terycott
Which scientists gave detailed information about nebula?
According to Dalton’s atomic theory, the smallest particle which can exist independently is 1 An atom 2 A molecule 3 A cation 4 An anion
Which of the following was to be discovered first in the chromo sphere of the sun? 1 Xenon 2 Helium 3 Neon 4 Krypton
need for proper earthing
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Galvanized iron sheets have a coating of 1 Tin lead 2 Zinc 3 Chromium 4 Lead
In which year was the meteorology department founded?
What is condensation? 1 Change of gas into solid 2 Change of solid into liquid 3 Change of vapour into liquid 4 Change of heat energy into cooling energy
When was the atomic energy regulatory board ( aerb ) constituted?